Re: [CR] SR seat post slippage - aNOTHER cure

(Example: Production Builders:Cinelli)

Date: Thu, 10 Jul 2003 20:08:33 -0400
From: "HM & SS Sachs" <sachs@erols.com>
To: NortonMarg@aol.com, tom_s_dalton@yahoo.com, classicrendezvous@bikelist.org
Subject: Re: [CR] SR seat post slippage - aNOTHER cure


Stevan Thomas wrote:

In the old days I got a couple of seat posts really cheap because they slipped. I took it apart and noticed a very shiny patch (the high spot where it actually contacted) that has lost the matt finish that provided some grip. I masked the post so I could bead blast the mating surface and give it a new rough finish (do both parts) and...Viola! No more slippage.

------------- Here's another, rather easy way to stop single-bolt clamps from slipping, taught to me by a shop owner. Take it apart, and cut a shim of medium-grit sandpaper to fit between the two surfaces, with a hole for the through-bolt. Put it back together, clamp it at the angle you like, and ride. The grit makes microdents on BOTH surfaces, right through the paper. I don't like those posts, but it works (at least on soft ones like Kalloy). With 20:20 hindsight, it is perfectly obvious!

harvey sachs
mcLean va